mir-124 microRNA precursor family

mir-124 microRNA precursor family
Predicted secondary structure and sequence conservation of mir-124
Identifiers
Symbol	mir-124
Rfam	RF00239
miRBase	MI0000443
miRBase family	MIPF0000021
Other data
RNA type	Gene; miRNA
Domain(s)	Eukaryota
GO	0035195 0035068
SO	0001244

The miR-124 microRNA precursor is a small non-coding RNA molecule that has been identified in flies (MI0000373),^[1] nematode worms (MI0000302),^[2] mouse (MI0000150) and human (MI0000443).^[3] The mature ~21 nucleotide microRNAs are processed from hairpin precursor sequences by the Dicer enzyme, and in this case originates from the 3' arm. miR-124 has been found to be the most abundant microRNA expressed in neuronal cells. Experiments to alter expression of miR-124 in neural cells did not appear to affect differentiation.^[4]

Targets of miR-124

• Visvanathan et al.. showed that miR-124 targets the mRNA of the anti-neural function protein SCP1 (small C-terminal domain phosphatase 1).^[5]

• Makeyev et al showed that miR-124 directly targets PTBP1 (PTB/hnRNP I) mRNA, which encodes a global repressor of alternative pre-mRNA splicing in non-neuronal cells.^[6]

References

1. ^ Lai, EC; Tomancak P, Williams RW, Rubin GM (2003). "Computational identification of Drosophila microRNA genes". Genome Biol 4 (7): R42–. doi:10.1186/gb-2003-4-7-r42. PMC 193629. PMID 12844358. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=193629. 
2. ^ Lim, LP; Lau NC, Weinstein EG, Abdelhakim A, Yekta S, Rhoades MW, Burge CB, Bartel DP (2003). "The microRNAs of Caenorhabditis elegans". Genes Dev 17 (8): 991–1008. doi:10.1101/gad.1074403. PMC 196042. PMID 12672692. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=196042. 
3. ^ Lagos-Quintana, M; Rauhut R, Yalcin A, Meyer J, Lendeckel W, Tuschl T (2002). "Identification of tissue-specific microRNAs from mouse". Curr Biol 12 (9): 735–739. doi:10.1016/S0960-9822(02)00809-6. PMID 12007417. 
4. ^ Cao X, Pfaff SL, Gage FH (2007). "A functional study of miR-124 in the developing neural tube". Genes Dev. 21 (5): 531–6. doi:10.1101/gad.1519207. PMC 1820895. PMID 17344415. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1820895. 
5. ^ Visvanathan J, Lee S, Lee B, Lee JW, Lee SK (2007). "The microRNA miR-124 antagonizes the anti-neural REST/SCP1 pathway during embryonic CNS development". Genes Dev. 21 (7): 744–9. doi:10.1101/gad.1519107. PMC 1838526. PMID 17403776. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1838526. 
6. ^ Makeyev EV, Zhang J, Carrasco MA, Maniatis T (August 2007). "The MicroRNA miR-124 Promotes Neuronal Differentiation by Triggering Brain-Specific Alternative Pre-mRNA Splicing". Mol. Cell 27 (3): 435–48. doi:10.1016/j.molcel.2007.07.015. PMC 3139456. PMID 17679093. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3139456. 

External links

• Rfam page for miR-124 microRNA precursor family
• miRBase family for miR-124